Strongylocentrotus fransiscanus; S. drobachiensis; S. purpuratus
Red sea urchin, green sea urchin, purple sea urchin
The largest of the three urchins is the red, with a shell diameter of around 7 inches; greens are the smallest at around 1 1/2 inches. Urchin roe ranges in color from canary yellow to orange. The membrane holding the roe should be intact. Cleaned uni is soaked in an alum-salt solution that firms the membrane.High-quality uni has a sweet taste and a smooth, buttery texture. Male roe is silkier; female roe is textured more like fine cream of wheat.
Uni can be eaten from the shell as is, or spread on crackers with a dash of lemon juice. Use it as sushi, in omelets, in rich seafood sauces or as a filling in crepes. Fresh urchin roe is best, since frozen roe loses some texture and the membrane sacs can break, but it’s still fine for sauces and such.
Canada, United States
Amount Per Serving - Serving Size 100 g/3.5oz
U.S. Department of Agriculture, Agricultural Research Service. FoodData Central, 2019. fdc.nal.usda.gov.
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